Open dataset
The Proof Index
Reviewed monthly. Last revised 11 June 2026. CC BY 4.0, attribution: Magnetite (magnetite.ai), the Proof Engine. Download as JSON.
Of the B2B products our discovery engine has swept, 109 of 113 had genuine third-party praise their companies had never used in advertising. The engine found 3890 mentions, graded 1440 of them as genuine praise, and the total discovery cost for the entire dataset was $0.60. Unused praise is not scarce. It is lying on the ground.
Headline figures
| Metric | Value | Notes |
|---|---|---|
| Products swept with genuine unused praise | 109 of 113 (97%) | Products where at least one mention survived the grading gates. The misses are counted, not hidden |
| Third-party mentions discovered | 3890 | 3815 unique after dedup, across 124 sweeps |
| Graded as genuine praise | 1440 | 2381 excluded (62%): wrong entity, employees, no proof content |
| Total discovery spend for this entire dataset | $0.60 | Live engine metering across all discovery API calls |
How genuine praise grades
Tier definitions and the full rubric are in the proof grading system.
| Metric | Value | Notes |
|---|---|---|
| Gold tier | 421 | First-person workflow accounts from genuine users |
| Expert tier | 250 | Authority figures in the buyer's space |
| Mention tier | 763 | Listicle and tool-stack inclusions |
| Review tier | 6 | Structured review-site content |
Methodology and honest limits
- Source: live metering of the Magnetite Proof Engine (discovery runs, grading verdicts, spend ledger). Nothing here is estimated or surveyed; every number is a logged event.
- Aggregates only. No client names, no per-company rows, no author data. The grading rubric checks entity identity first, so same-named-company collisions are excluded, not counted.
- Sample: 113 B2B SaaS products (a mix of audit clients and well-known products chosen as public benchmarks). Meaningful, not a census; the index grows monthly.
- Discovery currently runs deepest on LinkedIn. Other sources (X, Reddit, YouTube, podcasts, reviews) under-count in this snapshot and will widen the index as connectors come online.
Revisions
| Date | Change |
|---|---|
| 11 June 2026 (night) | ICP edition: 48 mid-market B2B SaaS products added (sales intelligence, ABM, meeting tools, customer success, European fintech-ops and HR tech). The index now covers 113 products and 1,440 graded units. Four products had every discovered mention excluded by the gates, so the share with genuine praise is 96.5%, not 100%. Real measurement includes misses. |
| 11 June 2026 (evening) | Scale-up edition: 46 well-known B2B SaaS products added to the roster. The index now covers 65 products, 2,677 discovered mentions and 1,042 graded genuine-praise units. |
| 11 June 2026 | First publication: full engine history to date (19 products, 30 sweeps). |
Reuse freely under CC BY 4.0. Cite as: Magnetite (magnetite.ai), The Proof Index, 2026. Questions, corrections, or your own product swept into the next edition: founders@magnetite.ai.